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1206902161213 = 77916651131071
BaseRepresentation
bin10001100100000000111…
…110010111111100111101
311021101020002100020011221
4101210000332113330331
5124233213423124323
62322235421513341
7153124106051020
oct21440076277475
94241202306157
101206902161213
11425931895a61
12175aa5112851
1389a6c555a78
14425b30971b7
15215dab2a55d
hex11900f97f3d

1206902161213 has 16 divisors (see below), whose sum is σ = 1396871004160. Its totient is φ = 1021323654000.

The previous prime is 1206902161193. The next prime is 1206902161259. The reversal of 1206902161213 is 3121612096021.

It is a cyclic number.

It is not a de Polignac number, because 1206902161213 - 25 = 1206902161181 is a prime.

It is a super-2 number, since 2×12069021612132 (a number of 25 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1206902161613) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9142468 + ... + 9273538.

It is an arithmetic number, because the mean of its divisors is an integer number (87304437760).

Almost surely, 21206902161213 is an apocalyptic number.

It is an amenable number.

1206902161213 is a deficient number, since it is larger than the sum of its proper divisors (189968842947).

1206902161213 is a wasteful number, since it uses less digits than its factorization.

1206902161213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 147808.

The product of its (nonzero) digits is 7776, while the sum is 34.

The spelling of 1206902161213 in words is "one trillion, two hundred six billion, nine hundred two million, one hundred sixty-one thousand, two hundred thirteen".

Divisors: 1 7 79 553 16651 116557 131071 917497 1315429 9208003 10354609 72482263 2182463221 15277242547 172414594459 1206902161213